[20a-S321-1~10] 3.13 Semiconductor optical devices

[20a-S321-2] Study of Photo-coupler on Charge-Sensitive Infrared Phototransistors (CSIP)

〇Sunmi Kim¹, Susumu Komiyama², Kuan-Ting Lin¹, Mikhail Patrashin³, Yusuke Kajihara¹ (1.IIS, Univ. of Tokyo, 2.Dept. Basic Sci., Univ. of Tokyo, 3.NICT)

Keywords:Quantum well,Photo-coupler

Charge-sensitive infrared phototransistor (CSIP) is a highly sensitive semiconductor detector based on double quantum wells (QWs). Due to the excitation mechanism via intersubband transition in QW, the CSIP requires careful design of photo-couplers. For archiving high performance for the passive terahertz near-field microscopy, we will discuss the optical properties of CSIP with antenna structures in the wavelength range of 10-20 μm.